Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the frigates category.
01 / Overview
River-class frigate
Category
Country
Prime contractor
Yarrow Shipbuilders Limited, Williamstown Dockyard, Cockatoo Docks & Engineering Company, Canadian Vickers, Charles Hill & Sons, Fleming and Ferguson, Ferguson Marine, Hall, Russell & Company, Smiths Dock Company, Davie Shipbuilding, Evans Deakin and Company, John Crown & Sons Ltd, Mort's Dock, Walkers Limited, Henry Robb, Morton Engineering and Dry Dock Company, A. & J. Inglis
Production
1942–1944
Quantity
151
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
FRIGATES · WORLD WAR II
8
PERFORMANCE/PRICE
94
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the frigates category, regardless of era.
02 / Specs & Design
◎Identification8MOD.8
- Hull ClassificationRiver-class frigate
- Ship Typefrigate
- Builder / Shipyardvarious British and Commonwealth shipyards
- Laid Down1940
- Launched1941
- Commissioned1942
- Ships in Class151
- In ServiceNo
◈Displacement3MOD.3
- Light Displacement1,370 t
- Standard Displacement1,370 t
- Full Load Displacement1,830 t
▣Dimensions4MOD.4
- Length (overall)86.26 m
- Length (waterline)91.86 m
- Beam11 m
- Draft2.74 m
◇Complement2MOD.2
- Total Complement107
- Air Wing Personnel0
◆Propulsion9MOD.9
- PropulsionSteam Turbine
- Arrangement (CODAG/COGAG…)2 × Admiralty 3-drum boilers, 2 shafts, reciprocating vertical triple expansion
- Number of Engines2
- Shaft Power4,101 kW
- Shafts / Screws2
- Top Speed20 kn
- Cruise Speed12 kn
- Range7,200
- Nuclear-PoweredNo
▤Gun Armament4MOD.4
- Main GunQF 4 inch Mk XIX naval gun
- Main Gun Calibre102 mm
- Main Gun Count2
- Secondary GunsOerlikon 20 mm cannon
⬢Missile Armament4MOD.4
▲Underwater Warfare4MOD.4
- Torpedo Tubes0
- ASW CapabilityYes
- Hull-Mounted SonarNo
- Towed Array SonarNo
◎Aviation5MOD.5
- Embarked Helicopters0
- HangarNo
- Flight DeckNo
- Fixed-Wing Aircraft0
- UAV CapabilityNo
◈Sensors & Combat Systems3MOD.3
▣Survivability5MOD.5
- CBRN CitadelNo
- DegaussingNo
- Hull Materialsteel
- Stealth ShapingNo
- Automated Damage ControlNo
◇Fleet Status7MOD.7
- Completed151
- Active0
- Under Construction0
- Planned30
- Cancelled2
- Lost17
- Preserved4
◆Armour3MOD.3
- Armournone
- Belt Armour0 mm
- Deck Armour0 mm
03 / History
SERVICE LIFESPANStill in Service
- 1939First deployment: World War II
- 1941Entered service
- 1942Production started
- 1944Production ended
84
years in service
2
years in production
151
units produced
17
countries operating
ⓘ The producing country still actively operates it.
04 / Variants
▚ WEAPON FAMILY
06 / MASS Score
FRIGATES RANKING Frigates · World War II
MASS RANKINGSMASS ↗
ⓘ Rankings are within theFrigatescategory.
📖 TERMS ON THIS PAGE2terms
Anti-Submarine Warfare. Capability to detect, track, and engage submarines.
A mechanical device that converts steam pressure into rotational energy, used to drive shipboard generators or propulsion systems.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources